Flash boiler



Aug. 14, 192s.

A. G. GARBUTT FLASH BOILER /////////////////////////////r//////nA/f/VVVVVVVVVVVVVV.

WITNESSES Aug. 14, 1928. 1,680,608

A. G. GARBUTT FLASH BO ILER Filed Aug. 5, 1925 2 Sheets-Sheet y2WITNESSES INVENTOR 7' WM A ./Zlafbu/d? ATTORNEYS I Paten-tedAug. 14,192,18.

UNITED; STATES .ALLIE GLENN GARBUElJT, OF VALDGSTA, GEORGIA.

FLASH BOILIER.

Application led August 3, 1925. Serial No. 47,957.

This invention relates to an improved flash boiler which is capable `ofproducing in an economical and efficient manner a high steam ypressurefrom a relatively Small amount of o. Water. y l

A further object-of the invention resides in the provision'of a deviceof this character which 1s of simple and durable-construction,

easilyr taken apart for purposes of cleaning,

I replacement and repair, and comparatively inexpensive to manufacture.Other objects and advantages reside in cer tain novel features of theconstruction, ar.- rangement and combination of parts which l will behereinafter more fully described and particularly'pointed out in theappended i claims, reference being had to the accompanying drawingsIforming .al part of th1s specification, and in which:

Figure 1 is a view in transverse vertical section-on linc1`1 of Figure2;

Figure 2 is a view in horizontal section `on v line 2--2 of-Figure 1,and

- is a similar view on line 3-3 of Figure 1.

Referring to the drawings the numeral 1 Figure 3 designates anannularfbase which also prvides a re chamber on which a double Walledcasing 2 is mounted, the casing 2 being secured to a support-ing plate 3suitably fixed to the base.

A steam Hash the Water supplied'thereto into -steam is suspended byangle "brackets 5 on thelcasing `2. The steam producer comprises anouter heavy Wall 6 made of spaced annular sections 6a, adjacent sections6'l being oppositely inclined and being connected at ,their ends as at6b. An inner Wall 7 of corresponding formation is arranged adjacent' tobut spaced from the wall 6 and with the outer wall defines a thinsinuous water space 8, the wall 7 also having oppositely inclined `Walls7a connected' atl their ends by curved connecting portions 7 b. The Wall7 has out- Wardly directed lugs Q'which rest onan an-y nular ledge 10formed `on the Wall 6 so as to support the inner Wall on the outer Wallin spaced relation thereton p ate 11 is provided and has a peripheralHarige 12 bolted to an outwardly directed flange 11 provided on theouter Wall 6. The dome 11 pressesdown on a ring 15 which engages thelugs 9 to prevent upward displacenient of the inner Wall 7 The dome 1lwith 'fire spaces'18il between the steam producer 'to force waterthrough the pipe 16 to the steam producer. producers 4 which operates.to`

"A dome or top l or other engine may be utlhzed as a source `having asteam producer the ring 15 and-the inner Wall 7 `defines a steam space16.

Tater is supplied to the Waterspace 8 by means of a pipe 16 .whichextends through the fire box and is connected to the outer wall 6 at itscenter. 'The steam may be taken from the space 16 through a pipe 17.

Heat from an oil burner,.a gas burner or from any other suitable sourceis supplied to the fire box through a conduit 18 and the hot ,gases sosupplied pass under the outer Wall 6 into direct contact with thesections 6a and connecting portions 6b of said puter Wall. These gasesthen pass through the 6 and the casing 2 and pass out through a sleeve19 which `defines an exit or flue through the casing 2. Stay bolts orother suitable fastening devices 20 hold the sleeve 19 in position andaid in `properly spacing the walls 2"L ofthe double walled casing 2.

In the space 2b defined between the Walls 2aL an auxiliary heater isprovided and comprises a coil 21 `receiving heat or hot gases from thefire box, the flue, or from an independent source and serving to heatwater supplied to the space 2b by means-uf a pipe 22. A pipe 23 leadsfrom the upper portion of the space 2b to the suction of a pump used Inthis way the feed Water is preheated and While hot is supplied to thewater space 8 Where itis spread out as a thin lm and subjected tointense heat to cause it to flash instantly into steam which issues frombetweenlthe walls at 24 into the steam space 16. Hot dry steam isproduced in this Way during the sinuous travel of the thin film inrising and falling sheets from the center'to the periphery of theproducer and, high economy in the use of Water is effected .In smallboilers stay bolts are entirely eliminated in the steam producer but inlarge boilerststay bolts may be extended from the dome 11 to the Walls 6and 7.` With the use of such stay bolts a boiler of any desired capacitymay be produced.

The Iexhaust gases of an automobile engine of heat by coupling duit 18and coil 21.

I claim: Y

1. A ash boiler of the character described comprising a plu; im

the exhaust to the con! rality ot concentric annular sections,connections between thev alternate ends of adjacent sections forming alproducer zigzag in cross section, said sections and said connectionsbeing made up of closely spaced walls defining a sinuous water spacethrough which the water travels spread out into a thin film and in theform ofrising and falling sheets.

2. A flash boiler of the character described having a steam producercomprising a plurality of concentric annular sections, connectionsbetween the alternate ends of adjacent. sections forming a producerzigzag in cross section, said sections and said connections being iliadeup of closely spaced walls definingr a sinuous water space through whichthe water travels spread out into `a thin tihn and in the form of risingand falling sheets, adjacent oppositely inclined.

3. A flash boiler of the character described, having a steam producercomprising a plurality of concentric annular sections, connectionsbetween the alternate ends of adjacent sections forming a producerzigzag in Aeros-s section, said sections and said connectA ns beingmadeup of closely spaced Walls defining a sinuous water spacethroughsteam space,

annular section being annular sections being which the Water travelsspread out in a thin film and in the form of 'rising and falling sheets,means co-acting tvith the out/erwall of the outermost'annulary sectionto define a the inner wall of the outermost apertured to define a steamoutlet from the Water space.

4. A flash boiler of the class described having a steam producercomprising spaced walls defining a water space and made up of annularsections, adjacent sections being connected at their alternate ends, anda dome co-aeting with the walls to define a steam space, and means for.supplying water to the water space there being a steam outlet from thewater space to the steam space.

b5. A flash boiler of the character described having a steam producercomprising spaced walls defining a Water space and made up of annularsections, adjacent sections being connected at their alternate ends anda dome cti-acting with the walls to define a steam space and means forsupplying Water to the center of the water space; there being aperipheral steam outlet from the water space to the steam space.

ALLIE GLENN GARBUTT.

